Compounds containing rare earth metals and at least one element other than a rare earth metal, oxygen or hydrogen, e.g. La4S3Br6 (C01F17/247 - C01F17/294 take precedence)

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Compounds of rare earth metals > Compounds containing rare earth metals and at least one element other than a rare earth metal, oxygen or hydrogen, e.g. La4S3Br6 (C01F17/247 - C01F17/294 take precedence)

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• C01F 17/32 oxide or hydroxide being the only anion, e.g. NaCeO2 or MgxCayEuO
• C01F 17/36 halogen being the only anion, e.g. NaYF4
• C01F 17/38 sulfur being the only anion, e.g. CaLa2S4